CMP – Coming Soon & Maintenance Plugin by NiteoThemes <= 4.1.16 - Missing Authorization to Authenticated (Administrator+) Arbitrary File Upload and Remote Code Execution
| CVE | CVE-2026-6518 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | April 17, 2026 |
| Last Updated | April 18, 2026 |
| Researcher |
Bao Le
|
Description
The CMP – Coming Soon & Maintenance Plugin by NiteoThemes plugin for WordPress is vulnerable to arbitrary file upload and remote code execution in all versions up to, and including, 4.1.16 via the `cmp_theme_update_install` AJAX action. This is due to the function only checking for the `publish_pages` capability (available to Editors and above) instead of `manage_options` (Administrators only), combined with a lack of proper validation on the user-supplied file URL and no verification of the downloaded file's content before extraction. This makes it possible for authenticated attackers, with Administrator-level access and above, to force the server to download and extract a malicious ZIP file from a remote attacker-controlled URL into a web-accessible directory (`wp-content/plugins/cmp-premium-themes/`), resulting in remote code execution. Due to the lack of a nonce for Editors, they are unable to exploit this vulnerability.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for CMP – Coming Soon & Maintenance Plugin by NiteoThemes
| Software Type | Plugin |
|---|---|
| Software Slug | cmp-coming-soon-maintenance (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.1.17, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in CMP – Coming Soon & Maintenance Plugin by NiteoThemes
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | CMP – Coming Soon & Maintenance <= 4.1.13 - Authenticated (Admin+) Arbitrary File Upload | CVE-2025-32118 | SavPhill (Savphill) | April 4, 2025 | |
| 2 | CMP – Coming Soon & Maintenance <= 4.1.10 - Authenticated (Admin+) Server-Side Request Forgery | CVE-2023-50374 | Yuchen Ji | March 27, 2024 | |
| 3 | CMP – Coming Soon & Maintenance <= 4.1.7 - Maintenance Mode Bypass | CVE-2023-2159 | Marco Wotschka | April 18, 2023 | |
| 4 | CMP – Coming Soon & Maintenance Plugin by NiteoThemes <= 4.1.6 - Information Exposure | CVE-2023-1263 | Marco Wotschka | March 7, 2023 | |
| 5 | CMP - Coming Soon & Maintenance Plugin <= 4.0.18 - Unauthenticated Arbitrary CSS Update | CVE-2022-0188 | Krzysztof Zając | January 17, 2022 | |
| 6 | CMP <= 3.8.1 - Missing Authorization | CVE-2020-36730 | Jerome Bruandet | August 4, 2020 |
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